Who were the four great calligraphers in Song Dynasty? What's their story?

There were four great calligraphers in Song Dynasty, namely Cai Xiang, Mi Fei, Huang Tingjian and Su Dongpo. In the history of calligraphy, these four people are called "Song Sijia" together. Mi Fei's eccentricities were well-known in the literati circle of the Song Dynasty.

Everyone who has dealt with Miffy knows that he is a neat freak. "He loves cleanliness so much that he doesn't even play towels with people." (Biography of Mi Fei in Song Dynasty) loves cleanliness. He insists on not using what others have used. It's too dirty. He chooses a son-in-law for his daughter, regardless of appearance and personality, and only cares about whether others pay attention to hygiene. Anyone who doesn't wash his face for more than eight times doesn't get into his eyes. Later, a young man came to visit. This man's surname is Duan, and his word belongs to dust. Miffy was overjoyed: "It's really my husband!" ("Wan Li Ye Bei Bian" Volume 8) Even the name is so clean, it must be very hygienic. My son-in-law is him!

There was a great traitor named Cai Jing in the Northern Song Dynasty, and his family collected a lot of antique calligraphy and painting. Miffy copied it every day, which made Cai Jing bored and shut the door and refused to enter the house. Mi Fei never gave up, "only called around the house" ("Court Record"), kept in front of other people's houses, walked around the house, and shouted as he walked until Cai Jing opened the door.

Cai Jing has a son named Cai You, who spent a lot of money to buy an original calligraphy by Wang Xizhi. Miffy heard about it and asked to see it. Cai, you don't want to show it to him. He actually took out a dagger from his boots and pointed to his heart and said, "If you don't promise, I will die in front of you!" " Cai You had to show him his calligraphy. While enjoying the excitement, Mifei suddenly rolled up his calligraphy, stuffed it into his arms, pushed open the window and jumped into the puddle outside. Cai You was surprised and asked him what he wanted. He said sadly, "I've never had this in my life, so I'd rather die." I have collected so many calligraphy and paintings that nothing can compare with this one. What's the point of my living in this world? I might as well die. Cai You was in distress situation and had to give him the calligraphy.

On another occasion, Mifei saw an ancient monument of the Tang Dynasty with a palm-sized face carved on it in a temple in Hunan Province. Miffy likes it more and more. In the middle of the night, while the monk was asleep, he dug up the tablet, quickly carried it to the boat, and sailed away overnight, ready to transport it back to his hometown. When the monk woke up, he found that the ancient monument was gone. He guessed that Miffy had stolen it, so he went to report it. "The official is trying to recover." ("Tieweishan Congtan" Volume 4) The local officials sent the police to catch up with Mi Fei at the fastest speed and chase the ancient monument back.